| http://www.w3.org/ns/prov#value | - This in turn triggers complementary responses involving pro-angiogenic factor vascular endothelial growth factor (VEGF) and receptors such as c-Met and CXCR4, which enhanced cell motility and homing to specific, distant organs; (3) recent studies also demonstrated that circulating cancer cells (CTCs) become more aggressive under hypoxic condition.
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